Valve.



FFQ.

VALVE.

To all whom 'it may concern:

Be it lmown that I,- ALLEN A. Bowsnn, a

citizen of the United States, residing at Fort Wayne, in the county of Allen and State of 5. Indiana, have invented certain new and useful Improvements in Valves, of which the following is a speciiication. My invention relates to valves and has for its primary object the provision vof an improved valve which shall have improved means for clearing the discharge of the valve of obstructions.

With the above and other objects in view, this invention consists substantially in the combination, arrangement and construction of parts all as hereinafter described, shown in the accompanying drawings which form a part of this speciication and illustratethe preferred embodiment of my invention, and more particularly set forth in the subjoined claims. 1

In the drawings,-Figure 1 is a vertical section approximately through the center of my improved valve, showing parts thereof in side elevation and the closed position of the parts; F ig. 2 is an illustration of a portion of Fig. 1 but showing the open position of the parts, and Fig. 3 is a detail view of the top of a piston screw forming part of my invention.

My improved valve is particularly useful in handling liquids which have a tendency to obstruct the flow of liquid from the valve by drying up and caking within the discharge.

Reference numeral 10 indicates a valve body, screw-threaded at its intake end 11 for connection to a source of supply, and provided with a bonnet 12 screw-threaded as at 13 into its upper portion. The bonnet 12 carries an upright boss 14 and is formed a with depending guide members 15 slotted as .at 16. Across the top of the bonnet and at the bottom of the boss 14 extends a web 17, centrally perforated for the reception of an operating stem, to be described. Adjacent its bottom and just above the upper ends of the guide members 15, the bonnet is threaded as at "18 for engagement with a 'valve screw, to be described. 'The valve body 10 is preferably of the well-known 11p-bent or antidrip type, and its discharge opening is in the present embodiment of the invention located directly below the bonnet 12 and co-axial therewith. At 19 is indicated the seat of my improved valve..

Application led January 22, 1914.

Specification of Letters Patent. Patented Jam. illl, 1911431 Serial No. 813,823.

From the body 10 a 'discharge spout 2O depends in a position co-axial with the seat 19. This spout is externally threaded as at 21, for engagement with a hose or pipe, as de- Lsired.

A handle for the valve is indicated at 22. This handle is provided with aV gland 23, internally squared at its lower end, as at 24, and provided with an internal shoulder 25 Just above its squared portion. Above the shoulder 25 the handle is cored to its top, and the top of the core is threaded for engagement with a cap screw 26. An annular channel 27 is formed in the lower face of the handle 22 and receives the upper end of the annular boss 14, the gland 23 being disposed within the boss and extending to a point adjacent the bottom thereof.

Mounted in the central aperture of the web 17 is an operating stem 28 provided below the'web with a collar 29, squared above the web as at 30 Yfor engagement with the squared interior lower end of the gland 23, and having its upper end 31 above the squared portion threaded for engagement with astop nut 32. Between the stop nut 3 2 and the shoulder 25 is interposed a coil spring 33. Washers 34 are interposed both betweenthe web 17 and the bottom of the gland 23, and between the web and the top of the collar 29, and the spring 33 acts to bind the Washers'in position and to hold the stem 30 up against the lower washer 34 and in proper coperating relation to the handle 22 and the gland 23,. As at 35, the operating stem 28 is squared below the collar 29. For cooperation with the squared lower end 35 of 'the operating stem is a valve screw 36, which engages the threads 18 in the lower part of the bonnet and is providedwith an upwardly opening squared aperture for engagement with the en'd 35 of the operatingj stem. A valve stem 37 is formed upon the lower face ofthe valve screw 36, and at its lower end is grooved,las at 38, for engagement with a tongue 39 to be described. A hollow valve 404carrying opposite lugs 4l, which engage the slots 16 of the guide inembers 15, incloses the lower end of the stem 37 and at its bottom is provided with a ground valve surface 42 for engagement with the seat 19. A piston screw 43 of steep pitch as compared with the pitch of the.

threads 18 is provided, with tongues 39 upon its upper `end which cooperate wlth the groove 38, and a machine screw 44 inserted through the body of the piston screw 43 engages a threaded aperture in the bottom of the valve stem 37 and binds the piston screw 43 securely to the bottom of the stem 37, the engagement between the tongues 39 and groove 38 providing for simultaneous rotation of the stem 37 and the screw 43..

A spring collar 45 is formedv upon the Vupper end of the piston screw 43, and a compression spring 46 is interposed between the collar 45 and the upper end of the hollow valve member 40, thereby holding in proper position awasher 34a, which is interposed between the bottom of the valve screw 36 and the top of the valve 40 to prevent leakage of liquid between the stem 37 and the valve 40. A `top plan view of the piston screw 43 is shown in Fig. 3, whereit will be seen that a. slight indentation 45a is Iformed in the periphery of the collar 45. A stud 47 protrudes within the interior of the hollow valve 40 at a point slightly removed from the bottom thereof, and a piston 48, slotted as at 49for engagement with the stud 47, is positioned within the spout 20 and valve 40 for vertical reciprocation therein. rI he slight indentation 45a in the periphery of the collar 45 is provided merely to facilitate the assembly of the valve; that is, to permit of the insertion of the collar valve 40 and past the stud 47. The piston 48 is hollow and is provided with an internal steep-pitched i thread for engagement with the piston screw 43. The 4piston `48 floats upon the\ piston screw 43 and rises and falls accordingly'as the piston screw is rotated and iills the spout 20 when the valve member 40 is seated. Preferably, the pitch of the threads 18 and the coperating valve screw 36 is such that a turn of the handle 22 somewhat less than three-quarters of a circle will cause the screw 36 to rise in the bonnet sufficiently to raise the valve 40 to the open position shown in Fig. 2. It has been stated that the pitch of the piston screw 43 is relatively steep, compared with that of the screw 36. The pitch of the piston screw 43 is, in fact,vsutiicient1y steep to cause a lifting of the piston 48 from the closed position shown in Fig. 1 to the fully opened po.

sition shown in Fig. 2, during the time that the valve 40 is raised from the closed position of Fig. 1 to the fully opened position of Fig. 2.

In the operation of this improved valve, a turning of the handle 22 through approximately 180 will change the parts from the closed position shown in Fig. l to the open position shown in Fig. 2. The valve screw 36 will be rotated by power received from the operating stem 28 through its squared extension 35, and the 'screw 36 will rise in the bonnet and about the squared end 35 until the bottom of the end 35 contacts with the bottom of the squared aperture formed .proved valve,

45 within the f 'coperate with the Ua piston reciprocable in the valve member in the escrew 36. Such contact will prevent further rotation of the handle 22 and any undue injury to the valve, the piston andv the piston screw, such for instance, as a jamming of the lugs 41 against the guide members 15 at the ltop of the slots 16, or a jamming of the lower end of the piston 48 against the lower end of the machine'screw 44. If such a'liquid as linseed oil, for instance, is being discharged through my imthe movement of the piston 48 downwardly through the Valve 40 and spout 20 during the closing of the valve will clear the discharge of the valve body of all oil, thereby preventing the well-known caking and obstruction in means of the construction herein described, it will be observed that a very short travel of the valve 40' is necessary for a complete opening of the passage between the valve and its seat 19,' and also that during that short passage the pistonl 48 is drawn up within the valve 40 and leaves the passage between the face 42 and the seat 19 absolutely clear. It is further to be noted that this result is accomplished while turning the handle'22 less than a Complete revolution.

In the accompanying drawings and-in the foregoing description is set forth the preferred embodiment of my invention, but it is obvious that one skilled in the art may make modifications thereof without depart-v therefrom, of a valve member coperating the valve body. By

with the seat, and a piston separately movi able with respect to the valve member and operated simultaneously with the member to ll the spout when the yalve member is on its seat.

2. In a valve, the combination with the valve seat and a discharge portion extending therefrom, of 'a valve member, and a plstonV movable independently of the valve and operated by y the valve actuating means for clearing the entire inner surface of the discharge portion when the valve member is closed.

3. In a valve, the combination with the.

yalve seat and a discharge portion extendlng therefrom, of a hollow valve member to seat in closing the valve,

for clearing the entire inner surface of the discharge portion when the valve is closed, and operating apparatus common to both the valve member and the piston.

4. In .a valve, the combination with the valve seat and discharge spout thereof, of a hollow valve member cooperating with the seat to close the valve, a reciprocating piston carried in the valve member for clearing the discharge spout of the valve, and operating laccata apparatus common to both the valve member and the piston, said operating appa-1 ratus including two screws of different pitch.

5. In a valve, the combination with the valve seat and discharge spout thereof, of a hollow valve member the interior of which forms in combination with the discharge a straight passageway, a piston mounted in said passageway for'reciprocation therein, and operating means common to the valve member and the piston for closing the valve and causing the piston simultaneously to traverse the discharge spout to the outer end thereof. y

6. The combination of a valve body with a discharge spout, a bonnet thereon, an Operating stem mounted in the bonnet, a handle carried by the bonnet and connected to the operating stem to actuate it, a valve screw in threaded engagement with the body ofl the bonnet, 'a hollow7 valve member coperating with the valve body to close the valve and supported by the valve screw, a piston for reciprocating within the hollow valve member and the discharge spout of the valve body, means carried by the valve screw for reciprocating the piston, and a squared extension on the operating stem coperating with a squared aperture provided in the valve screw to actuate the valve screw.

7. The combination with a valve body having a seat and a discharge opening, f a

bonnet secured to the body, an operating stem mounted in the bonnet, means for actuating the operating stem, a vertically slotted boss depending from the bonnet, a valvescrew threaded into the body of the bonnet, a valve stem formed upon the bottom of the valve-screw, a hollow valve member surrounding the valve stem, provided with lugs engaging the slots of the depending boss, a

piston screw of steep pitch secured to the lower end of the valve stem and provided with a shoulder at its upper end, a spring member interposed between the shoulder and the upper end of the hollow valve member, a piston oating upon the piston screw threads and adapted to be. reciprocated thereby within the hollow valve member and the discharge of the body, and an operating connection between the operating stem and the valve screw.

8. The combination with a valve body having a seat and a discharge opening, of a bonnet secured to the body, an operating stem mounted in the bonnet, means for actuating the operating stem, a vertically slotted boss depending from the bonnet, a valvescrew threaded into the body of the b onnet, a valve stem formed upon the bottom of the valve screw, a hollow valve member surrounding the valve stem, provided with lugs engaging the slots of the depending boss, a

piston screw of steep pitch secured to the for simultaneously moving lower end of the valve stem 4and provided with a shoulder at its upper end, a spring member interposed between the shoulder and ythe upper end of the hollow valve member,

' nection between the operating stem and the valve screw, and a stud protruding within the hollow valve member and coperating with a slot provided in the outer face of the piston to prevent rotation of the piston.

9. The combination with a valve body having a seat and a discharge spout opening, yof a hollow valve member coperating with the seat, a piston mounted within the valve member and the spout, and actuating means for lsimultaneously reciprocating the valve member and piston at different speeds.

10. The combination with a valve body having a seat and a discharge spout opening, of a hollow valve member coperating with the seat, a piston mounted within the valve member and the spout, and actuating means the valve and piston through different distances.

11. The combination with a valve body having a discharge spout below the valve seat, of a hollow valve member therefor adapted to be reciprocated, a piston mounted within the valve member for reciprocation, and actuating means for reciprocating the valve and piston simultaneously and causing the piston to traverse the. discharge spout of the valve body during the movement of the valve member in either direction.

12. The combination in a valve provided with a valve seat and having a discharge spout, of a valve member coperating with the seat, a piston independent of the valve member adapted to traverse the discharge spout, and actuating apparatus for simultaneously operating the valve member and piston.

' 13. The combination of a valve body, a bonnet carried thereby, an operating stem -mounted in the upper part of the bonnet, a

,adapted to'be reciprocated, a valve screw in threaded engagement with the bonnet and provided with a valve stem engaging an aperture in the ltop of the hollow valve member, a steep pitch piston screw fastened to the lower end of the valve stem, an internally threaded piston reciprocated by the piston screw, andasquared extension on the lower end of the operating stem engaging a f squared'aperture in the valve screw, said squared extension being of sufficient length to contact with the valve screw at the bottom of its aperture when the valve is fully opened.

14. The combination of a valve body, a bonnet carried thereby, an operating stem mounted in the upper part of the bonnet, a handle for movingy the operating stem, a hollow valve member coperating with the 4body of the valve to close the valve and adapted to be reciprocated, a valve screw in threaded engagement with the bonnet and provided with a valve stem engaging an aperture in the top of the hollow valve member, a steep pitch piston screw fastened to the lower end of the valve stem, an internally threaded piston reciprocated by the piston screw, means for 4maintaining the valve member and piston against rotation, and a squared extension on the lower end of the operating stem engaging a squared aperture in the valve screw, said squared eXtension being of sucient length to contact with the valve screw at the bottom of its aperture when the valve is fully opened. y

15. The combination-in a valve, of a reciprocating valve member, a reciprocating piston traversing the discharge of the valve, a valve screw, a valve stem formed upon the lower side of the screw upon which the piston and valve member are carried, said valve screw being provided with an upwardly opening squared aperture, and an operating stem having a squared extension upon its lower end engaging the squared aperture of the valve screw, the opening movements of said valve member and piston being arrested by contact between the lower end of the squared extension and the bottom of the valve screw aperture.

16. The combination in a valve, ciprocating valve member, a reciprocating piston traversing the discharge of the valve, a valve screw, a valve stem formed upon the lower side of the screw upon which the piston and valve member are carried, said valve screw being provided with an upwardly opening squared aperture, and an operating stem having a squared extension upon its lower end engaging the squared aperture of the valve screw, the `opening movements of said valve member and pistonr being arrested by contact between the lower end of the squared extension and the bottom of the valve screw aperture only.

In testimony whereof I have signed my nameto this specification, in the presence of two subscribing witnesses, on this 13th day of January, A. D. 1914.

ALLEN A. BOWSER.

4Witnesses: l H. D. WEAVER,

J. R. MATLACK.

of a re- 

